| Effect of Hydrogen Content on Low-Cycle Fatigue Behavior of Zr-Sn-Nb Alloy |
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| 作者姓名： | 周 军 李中奎 张建军 田 锋 |
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| 作者单位： | 1. 西北工业大学,陕西西安710072;西北有色金属研究院,陕西西安710016
2. 西北有色金属研究院,陕西西安,710016 |
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| 基金项目： | NSFC(50571083);National High-Tech Research and Development Projects“863”(2008AA031071) |
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| 摘 要： | 研究氢对NZ2新锆合金(Zr-1.0Sn-0.3Nb-0.3Fe-0.1Cr)低周疲劳行为的影响规律,采用4种不同氢含量(未渗氢,200,450,730μg/g)的板材试样进行室温和375℃下的低周疲劳试验.结果表明,在375℃下,循环变形时发现了动态应变时效现象,渗氢及氢含量的变化不会影响动态应变时效的发生；氢可以提高375℃下NZ2合金的低周疲劳寿命并且导致氢致循环软化.
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| 关 键 词： | 锆合金 低周疲劳 氢化物 |
| 收稿时间： | 2012/3/19 0:00:00 |
Effect of Hydrogen Content on Low-Cycle Fatigue Behavior of Zr-Sn-Nb Alloy |
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| Zhou Jun,Li Zhongkui,Zhang Jianjun and Tian Feng.Effect of Hydrogen Content on Low-Cycle Fatigue Behavior of Zr-Sn-Nb Alloy[J].Rare Metal Materials and Engineering,2012,41(9):1531-1534. |
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| Authors: | Zhou Jun Li Zhongkui Zhang Jianjun and Tian Feng |
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| Affiliation: | 1 Northwestern Polytechnical University, Xi’an 710072, China;2 Northwest Institute for Nonferrous Metal Research, Xi’an 710016, China |
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| Abstract: | The effects of absorbed hydrogen on behavior of NZ2 zirconium alloy (Zr-1.0Sn-0.3Nb-0.3Fe-0.1Cr, in wt% designated as NZ2) were investigated. The sheet specimens were hydrided with different hydrogen contents: unhydrided (original hydrogen content), 200, 450 and 730 mg/g H and tested at room temperature and 375 °C, respectively. The results show that dynamic strain ageing (DSA) can be observed during cyclic deformation of NZ2 alloy at 375 °C. Even if the hydriding content is up to 730 mg/g it has no influence on DSA. Hydrogen can improve the fatigue life of NZ2 alloy at 375 °C and cause the cyclic softening. |
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| Keywords: | zirconium alloy low cycle fatigue hydride |
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